drivers/gpu/drm/nouveau/nouveau_bo.c

   1 /*
   2  * Copyright 2007 Dave Airlied
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24 /*
  25  * Authors: Dave Airlied <airlied@linux.ie>
  26  *          Ben Skeggs   <darktama@iinet.net.au>
  27  *          Jeremy Kolb  <jkolb@brandeis.edu>
  28  */
  29
  30 #include "drmP.h"
  31
  32 #include "nouveau_drm.h"
  33 #include "nouveau_drv.h"
  34 #include "nouveau_dma.h"
  35
  36 static void
  37 nouveau_bo_del_ttm(struct ttm_buffer_object *bo)
  38 {
  39         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
  40         struct nouveau_bo *nvbo = nouveau_bo(bo);
  41
  42         ttm_bo_kunmap(&nvbo->kmap);
  43
  44         if (unlikely(nvbo->gem))
  45                 DRM_ERROR("bo %p still attached to GEM object\n", bo);
  46
  47         spin_lock(&dev_priv->ttm.bo_list_lock);
  48         list_del(&nvbo->head);
  49         spin_unlock(&dev_priv->ttm.bo_list_lock);
  50         kfree(nvbo);
  51 }
  52
  53 int
  54 nouveau_bo_new(struct drm_device *dev, struct nouveau_channel *chan,
  55                int size, int align, uint32_t flags, uint32_t tile_mode,
  56                uint32_t tile_flags, bool no_vm, bool mappable,
  57                struct nouveau_bo **pnvbo)
  58 {
  59         struct drm_nouveau_private *dev_priv = dev->dev_private;
  60         struct nouveau_bo *nvbo;
  61         int ret, n = 0;
  62
  63         nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
  64         if (!nvbo)
  65                 return -ENOMEM;
  66         INIT_LIST_HEAD(&nvbo->head);
  67         INIT_LIST_HEAD(&nvbo->entry);
  68         nvbo->mappable = mappable;
  69         nvbo->no_vm = no_vm;
  70         nvbo->tile_mode = tile_mode;
  71         nvbo->tile_flags = tile_flags;
  72
  73         /*
  74          * Some of the tile_flags have a periodic structure of N*4096 bytes,
  75          * align to to that as well as the page size. Overallocate memory to
  76          * avoid corruption of other buffer objects.
  77          */
  78         switch (tile_flags) {
  79         case 0x1800:
  80         case 0x2800:
  81         case 0x4800:
  82         case 0x7a00:
  83                 if (dev_priv->chipset >= 0xA0) {
  84                         /* This is based on high end cards with 448 bits
  85                          * memory bus, could be different elsewhere.*/
  86                         size += 6 * 28672;
  87                         /* 8 * 28672 is the actual alignment requirement,
  88                          * but we must also align to page size. */
  89                         align = 2 * 8 * 28672;
  90                 } else if (dev_priv->chipset >= 0x90) {
  91                         size += 3 * 16384;
  92                         align = 12 * 16834;
  93                 } else {
  94                         size += 3 * 8192;
  95                         /* 12 * 8192 is the actual alignment requirement,
  96                          * but we must also align to page size. */
  97                         align = 2 * 12 * 8192;
  98                 }
  99                 break;
 100         default:
 101                 break;
 102         }
 103
 104         align >>= PAGE_SHIFT;
 105
 106         size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 107         if (dev_priv->card_type == NV_50) {
 108                 size = (size + 65535) & ~65535;
 109                 if (align < (65536 / PAGE_SIZE))
 110                         align = (65536 / PAGE_SIZE);
 111         }
 112
 113         if (flags & TTM_PL_FLAG_VRAM)
 114                 nvbo->placements[n++] = TTM_PL_FLAG_VRAM | TTM_PL_MASK_CACHING;
 115         if (flags & TTM_PL_FLAG_TT)
 116                 nvbo->placements[n++] = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 117         nvbo->placement.fpfn = 0;
 118         nvbo->placement.lpfn = mappable ? dev_priv->fb_mappable_pages : 0;
 119         nvbo->placement.placement = nvbo->placements;
 120         nvbo->placement.busy_placement = nvbo->placements;
 121         nvbo->placement.num_placement = n;
 122         nvbo->placement.num_busy_placement = n;
 123
 124         nvbo->channel = chan;
 125         nouveau_bo_placement_set(nvbo, flags);
 126         ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
 127                           ttm_bo_type_device, &nvbo->placement, align, 0,
 128                           false, NULL, size, nouveau_bo_del_ttm);
 129         nvbo->channel = NULL;
 130         if (ret) {
 131                 /* ttm will call nouveau_bo_del_ttm if it fails.. */
 132                 return ret;
 133         }
 134
 135         spin_lock(&dev_priv->ttm.bo_list_lock);
 136         list_add_tail(&nvbo->head, &dev_priv->ttm.bo_list);
 137         spin_unlock(&dev_priv->ttm.bo_list_lock);
 138         *pnvbo = nvbo;
 139         return 0;
 140 }
 141
 142 void
 143 nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t memtype)
 144 {
 145         int n = 0;
 146
 147         if (memtype & TTM_PL_FLAG_VRAM)
 148                 nvbo->placements[n++] = TTM_PL_FLAG_VRAM | TTM_PL_MASK_CACHING;
 149         if (memtype & TTM_PL_FLAG_TT)
 150                 nvbo->placements[n++] = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 151         if (memtype & TTM_PL_FLAG_SYSTEM)
 152                 nvbo->placements[n++] = TTM_PL_FLAG_SYSTEM | TTM_PL_MASK_CACHING;
 153         nvbo->placement.placement = nvbo->placements;
 154         nvbo->placement.busy_placement = nvbo->placements;
 155         nvbo->placement.num_placement = n;
 156         nvbo->placement.num_busy_placement = n;
 157
 158         if (nvbo->pin_refcnt) {
 159                 while (n--)
 160                         nvbo->placements[n] |= TTM_PL_FLAG_NO_EVICT;
 161         }
 162 }
 163
 164 int
 165 nouveau_bo_pin(struct nouveau_bo *nvbo, uint32_t memtype)
 166 {
 167         struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
 168         struct ttm_buffer_object *bo = &nvbo->bo;
 169         int ret, i;
 170
 171         if (nvbo->pin_refcnt && !(memtype & (1 << bo->mem.mem_type))) {
 172                 NV_ERROR(nouveau_bdev(bo->bdev)->dev,
 173                          "bo %p pinned elsewhere: 0x%08x vs 0x%08x\n", bo,
 174                          1 << bo->mem.mem_type, memtype);
 175                 return -EINVAL;
 176         }
 177
 178         if (nvbo->pin_refcnt++)
 179                 return 0;
 180
 181         ret = ttm_bo_reserve(bo, false, false, false, 0);
 182         if (ret)
 183                 goto out;
 184
 185         nouveau_bo_placement_set(nvbo, memtype);
 186         for (i = 0; i < nvbo->placement.num_placement; i++)
 187                 nvbo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
 188
 189         ret = ttm_bo_validate(bo, &nvbo->placement, false, false);
 190         if (ret == 0) {
 191                 switch (bo->mem.mem_type) {
 192                 case TTM_PL_VRAM:
 193                         dev_priv->fb_aper_free -= bo->mem.size;
 194                         break;
 195                 case TTM_PL_TT:
 196                         dev_priv->gart_info.aper_free -= bo->mem.size;
 197                         break;
 198                 default:
 199                         break;
 200                 }
 201         }
 202         ttm_bo_unreserve(bo);
 203 out:
 204         if (unlikely(ret))
 205                 nvbo->pin_refcnt--;
 206         return ret;
 207 }
 208
 209 int
 210 nouveau_bo_unpin(struct nouveau_bo *nvbo)
 211 {
 212         struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
 213         struct ttm_buffer_object *bo = &nvbo->bo;
 214         int ret, i;
 215
 216         if (--nvbo->pin_refcnt)
 217                 return 0;
 218
 219         ret = ttm_bo_reserve(bo, false, false, false, 0);
 220         if (ret)
 221                 return ret;
 222
 223         for (i = 0; i < nvbo->placement.num_placement; i++)
 224                 nvbo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
 225
 226         ret = ttm_bo_validate(bo, &nvbo->placement, false, false);
 227         if (ret == 0) {
 228                 switch (bo->mem.mem_type) {
 229                 case TTM_PL_VRAM:
 230                         dev_priv->fb_aper_free += bo->mem.size;
 231                         break;
 232                 case TTM_PL_TT:
 233                         dev_priv->gart_info.aper_free += bo->mem.size;
 234                         break;
 235                 default:
 236                         break;
 237                 }
 238         }
 239
 240         ttm_bo_unreserve(bo);
 241         return ret;
 242 }
 243
 244 int
 245 nouveau_bo_map(struct nouveau_bo *nvbo)
 246 {
 247         int ret;
 248
 249         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 250         if (ret)
 251                 return ret;
 252
 253         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages, &nvbo->kmap);
 254         ttm_bo_unreserve(&nvbo->bo);
 255         return ret;
 256 }
 257
 258 void
 259 nouveau_bo_unmap(struct nouveau_bo *nvbo)
 260 {
 261         ttm_bo_kunmap(&nvbo->kmap);
 262 }
 263
 264 u16
 265 nouveau_bo_rd16(struct nouveau_bo *nvbo, unsigned index)
 266 {
 267         bool is_iomem;
 268         u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 269         mem = &mem[index];
 270         if (is_iomem)
 271                 return ioread16_native((void __force __iomem *)mem);
 272         else
 273                 return *mem;
 274 }
 275
 276 void
 277 nouveau_bo_wr16(struct nouveau_bo *nvbo, unsigned index, u16 val)
 278 {
 279         bool is_iomem;
 280         u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 281         mem = &mem[index];
 282         if (is_iomem)
 283                 iowrite16_native(val, (void __force __iomem *)mem);
 284         else
 285                 *mem = val;
 286 }
 287
 288 u32
 289 nouveau_bo_rd32(struct nouveau_bo *nvbo, unsigned index)
 290 {
 291         bool is_iomem;
 292         u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 293         mem = &mem[index];
 294         if (is_iomem)
 295                 return ioread32_native((void __force __iomem *)mem);
 296         else
 297                 return *mem;
 298 }
 299
 300 void
 301 nouveau_bo_wr32(struct nouveau_bo *nvbo, unsigned index, u32 val)
 302 {
 303         bool is_iomem;
 304         u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 305         mem = &mem[index];
 306         if (is_iomem)
 307                 iowrite32_native(val, (void __force __iomem *)mem);
 308         else
 309                 *mem = val;
 310 }
 311
 312 static struct ttm_backend *
 313 nouveau_bo_create_ttm_backend_entry(struct ttm_bo_device *bdev)
 314 {
 315         struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
 316         struct drm_device *dev = dev_priv->dev;
 317
 318         switch (dev_priv->gart_info.type) {
 319 #if __OS_HAS_AGP
 320         case NOUVEAU_GART_AGP:
 321                 return ttm_agp_backend_init(bdev, dev->agp->bridge);
 322 #endif
 323         case NOUVEAU_GART_SGDMA:
 324                 return nouveau_sgdma_init_ttm(dev);
 325         default:
 326                 NV_ERROR(dev, "Unknown GART type %d\n",
 327                          dev_priv->gart_info.type);
 328                 break;
 329         }
 330
 331         return NULL;
 332 }
 333
 334 static int
 335 nouveau_bo_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
 336 {
 337         /* We'll do this from user space. */
 338         return 0;
 339 }
 340
 341 static int
 342 nouveau_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
 343                          struct ttm_mem_type_manager *man)
 344 {
 345         struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
 346         struct drm_device *dev = dev_priv->dev;
 347
 348         switch (type) {
 349         case TTM_PL_SYSTEM:
 350                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
 351                 man->available_caching = TTM_PL_MASK_CACHING;
 352                 man->default_caching = TTM_PL_FLAG_CACHED;
 353                 break;
 354         case TTM_PL_VRAM:
 355                 man->flags = TTM_MEMTYPE_FLAG_FIXED |
 356                              TTM_MEMTYPE_FLAG_MAPPABLE |
 357                              TTM_MEMTYPE_FLAG_NEEDS_IOREMAP;
 358                 man->available_caching = TTM_PL_FLAG_UNCACHED |
 359                                          TTM_PL_FLAG_WC;
 360                 man->default_caching = TTM_PL_FLAG_WC;
 361
 362                 man->io_addr = NULL;
 363                 man->io_offset = drm_get_resource_start(dev, 1);
 364                 man->io_size = drm_get_resource_len(dev, 1);
 365                 if (man->io_size > nouveau_mem_fb_amount(dev))
 366                         man->io_size = nouveau_mem_fb_amount(dev);
 367
 368                 man->gpu_offset = dev_priv->vm_vram_base;
 369                 break;
 370         case TTM_PL_TT:
 371                 switch (dev_priv->gart_info.type) {
 372                 case NOUVEAU_GART_AGP:
 373                         man->flags = TTM_MEMTYPE_FLAG_MAPPABLE |
 374                                      TTM_MEMTYPE_FLAG_NEEDS_IOREMAP;
 375                         man->available_caching = TTM_PL_FLAG_UNCACHED;
 376                         man->default_caching = TTM_PL_FLAG_UNCACHED;
 377                         break;
 378                 case NOUVEAU_GART_SGDMA:
 379                         man->flags = TTM_MEMTYPE_FLAG_MAPPABLE |
 380                                      TTM_MEMTYPE_FLAG_CMA;
 381                         man->available_caching = TTM_PL_MASK_CACHING;
 382                         man->default_caching = TTM_PL_FLAG_CACHED;
 383                         break;
 384                 default:
 385                         NV_ERROR(dev, "Unknown GART type: %d\n",
 386                                  dev_priv->gart_info.type);
 387                         return -EINVAL;
 388                 }
 389
 390                 man->io_offset  = dev_priv->gart_info.aper_base;
 391                 man->io_size    = dev_priv->gart_info.aper_size;
 392                 man->io_addr   = NULL;
 393                 man->gpu_offset = dev_priv->vm_gart_base;
 394                 break;
 395         default:
 396                 NV_ERROR(dev, "Unsupported memory type %u\n", (unsigned)type);
 397                 return -EINVAL;
 398         }
 399         return 0;
 400 }
 401
 402 static void
 403 nouveau_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
 404 {
 405         struct nouveau_bo *nvbo = nouveau_bo(bo);
 406
 407         switch (bo->mem.mem_type) {
 408         case TTM_PL_VRAM:
 409                 nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_TT |
 410                                          TTM_PL_FLAG_SYSTEM);
 411                 break;
 412         default:
 413                 nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_SYSTEM);
 414                 break;
 415         }
 416
 417         *pl = nvbo->placement;
 418 }
 419
 420
 421 /* GPU-assisted copy using NV_MEMORY_TO_MEMORY_FORMAT, can access
 422  * TTM_PL_{VRAM,TT} directly.
 423  */
 424 static int
 425 nouveau_bo_move_accel_cleanup(struct nouveau_channel *chan,
 426                               struct nouveau_bo *nvbo, bool evict, bool no_wait,
 427                               struct ttm_mem_reg *new_mem)
 428 {
 429         struct nouveau_fence *fence = NULL;
 430         int ret;
 431
 432         ret = nouveau_fence_new(chan, &fence, true);
 433         if (ret)
 434                 return ret;
 435
 436         ret = ttm_bo_move_accel_cleanup(&nvbo->bo, fence, NULL,
 437                                         evict, no_wait, new_mem);
 438         nouveau_fence_unref((void *)&fence);
 439         return ret;
 440 }
 441
 442 static inline uint32_t
 443 nouveau_bo_mem_ctxdma(struct nouveau_bo *nvbo, struct nouveau_channel *chan,
 444                       struct ttm_mem_reg *mem)
 445 {
 446         if (chan == nouveau_bdev(nvbo->bo.bdev)->channel) {
 447                 if (mem->mem_type == TTM_PL_TT)
 448                         return NvDmaGART;
 449                 return NvDmaVRAM;
 450         }
 451
 452         if (mem->mem_type == TTM_PL_TT)
 453                 return chan->gart_handle;
 454         return chan->vram_handle;
 455 }
 456
 457 static int
 458 nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, int no_wait,
 459                      struct ttm_mem_reg *old_mem, struct ttm_mem_reg *new_mem)
 460 {
 461         struct nouveau_bo *nvbo = nouveau_bo(bo);
 462         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 463         struct nouveau_channel *chan;
 464         uint64_t src_offset, dst_offset;
 465         uint32_t page_count;
 466         int ret;
 467
 468         chan = nvbo->channel;
 469         if (!chan || nvbo->tile_flags || nvbo->no_vm)
 470                 chan = dev_priv->channel;
 471
 472         src_offset = old_mem->mm_node->start << PAGE_SHIFT;
 473         dst_offset = new_mem->mm_node->start << PAGE_SHIFT;
 474         if (chan != dev_priv->channel) {
 475                 if (old_mem->mem_type == TTM_PL_TT)
 476                         src_offset += dev_priv->vm_gart_base;
 477                 else
 478                         src_offset += dev_priv->vm_vram_base;
 479
 480                 if (new_mem->mem_type == TTM_PL_TT)
 481                         dst_offset += dev_priv->vm_gart_base;
 482                 else
 483                         dst_offset += dev_priv->vm_vram_base;
 484         }
 485
 486         ret = RING_SPACE(chan, 3);
 487         if (ret)
 488                 return ret;
 489         BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE, 2);
 490         OUT_RING(chan, nouveau_bo_mem_ctxdma(nvbo, chan, old_mem));
 491         OUT_RING(chan, nouveau_bo_mem_ctxdma(nvbo, chan, new_mem));
 492
 493         if (dev_priv->card_type >= NV_50) {
 494                 ret = RING_SPACE(chan, 4);
 495                 if (ret)
 496                         return ret;
 497                 BEGIN_RING(chan, NvSubM2MF, 0x0200, 1);
 498                 OUT_RING(chan, 1);
 499                 BEGIN_RING(chan, NvSubM2MF, 0x021c, 1);
 500                 OUT_RING(chan, 1);
 501         }
 502
 503         page_count = new_mem->num_pages;
 504         while (page_count) {
 505                 int line_count = (page_count > 2047) ? 2047 : page_count;
 506
 507                 if (dev_priv->card_type >= NV_50) {
 508                         ret = RING_SPACE(chan, 3);
 509                         if (ret)
 510                                 return ret;
 511                         BEGIN_RING(chan, NvSubM2MF, 0x0238, 2);
 512                         OUT_RING(chan, upper_32_bits(src_offset));
 513                         OUT_RING(chan, upper_32_bits(dst_offset));
 514                 }
 515                 ret = RING_SPACE(chan, 11);
 516                 if (ret)
 517                         return ret;
 518                 BEGIN_RING(chan, NvSubM2MF,
 519                                  NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
 520                 OUT_RING(chan, lower_32_bits(src_offset));
 521                 OUT_RING(chan, lower_32_bits(dst_offset));
 522                 OUT_RING(chan, PAGE_SIZE); /* src_pitch */
 523                 OUT_RING(chan, PAGE_SIZE); /* dst_pitch */
 524                 OUT_RING(chan, PAGE_SIZE); /* line_length */
 525                 OUT_RING(chan, line_count);
 526                 OUT_RING(chan, (1<<8)|(1<<0));
 527                 OUT_RING(chan, 0);
 528                 BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
 529                 OUT_RING(chan, 0);
 530
 531                 page_count -= line_count;
 532                 src_offset += (PAGE_SIZE * line_count);
 533                 dst_offset += (PAGE_SIZE * line_count);
 534         }
 535
 536         return nouveau_bo_move_accel_cleanup(chan, nvbo, evict, no_wait, new_mem);
 537 }
 538
 539 static int
 540 nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
 541                       bool no_wait, struct ttm_mem_reg *new_mem)
 542 {
 543         u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 544         struct ttm_placement placement;
 545         struct ttm_mem_reg tmp_mem;
 546         int ret;
 547
 548         placement.fpfn = placement.lpfn = 0;
 549         placement.num_placement = placement.num_busy_placement = 1;
 550         placement.placement = &placement_memtype;
 551
 552         tmp_mem = *new_mem;
 553         tmp_mem.mm_node = NULL;
 554         ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait);
 555         if (ret)
 556                 return ret;
 557
 558         ret = ttm_tt_bind(bo->ttm, &tmp_mem);
 559         if (ret)
 560                 goto out;
 561
 562         ret = nouveau_bo_move_m2mf(bo, true, no_wait, &bo->mem, &tmp_mem);
 563         if (ret)
 564                 goto out;
 565
 566         ret = ttm_bo_move_ttm(bo, evict, no_wait, new_mem);
 567 out:
 568         if (tmp_mem.mm_node) {
 569                 spin_lock(&bo->bdev->glob->lru_lock);
 570                 drm_mm_put_block(tmp_mem.mm_node);
 571                 spin_unlock(&bo->bdev->glob->lru_lock);
 572         }
 573
 574         return ret;
 575 }
 576
 577 static int
 578 nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
 579                       bool no_wait, struct ttm_mem_reg *new_mem)
 580 {
 581         u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 582         struct ttm_placement placement;
 583         struct ttm_mem_reg tmp_mem;
 584         int ret;
 585
 586         placement.fpfn = placement.lpfn = 0;
 587         placement.num_placement = placement.num_busy_placement = 1;
 588         placement.placement = &placement_memtype;
 589
 590         tmp_mem = *new_mem;
 591         tmp_mem.mm_node = NULL;
 592         ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait);
 593         if (ret)
 594                 return ret;
 595
 596         ret = ttm_bo_move_ttm(bo, evict, no_wait, &tmp_mem);
 597         if (ret)
 598                 goto out;
 599
 600         ret = nouveau_bo_move_m2mf(bo, true, no_wait, &bo->mem, new_mem);
 601         if (ret)
 602                 goto out;
 603
 604 out:
 605         if (tmp_mem.mm_node) {
 606                 spin_lock(&bo->bdev->glob->lru_lock);
 607                 drm_mm_put_block(tmp_mem.mm_node);
 608                 spin_unlock(&bo->bdev->glob->lru_lock);
 609         }
 610
 611         return ret;
 612 }
 613
 614 static int
 615 nouveau_bo_move(struct ttm_buffer_object *bo, bool evict, bool intr,
 616                 bool no_wait, struct ttm_mem_reg *new_mem)
 617 {
 618         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 619         struct nouveau_bo *nvbo = nouveau_bo(bo);
 620         struct drm_device *dev = dev_priv->dev;
 621         struct ttm_mem_reg *old_mem = &bo->mem;
 622         int ret;
 623
 624         if (dev_priv->card_type == NV_50 && new_mem->mem_type == TTM_PL_VRAM &&
 625             !nvbo->no_vm) {
 626                 uint64_t offset = new_mem->mm_node->start << PAGE_SHIFT;
 627
 628                 ret = nv50_mem_vm_bind_linear(dev,
 629                                               offset + dev_priv->vm_vram_base,
 630                                               new_mem->size, nvbo->tile_flags,
 631                                               offset);
 632                 if (ret)
 633                         return ret;
 634         }
 635
 636         if (dev_priv->init_state != NOUVEAU_CARD_INIT_DONE ||
 637             !dev_priv->channel)
 638                 return ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
 639
 640         if (old_mem->mem_type == TTM_PL_SYSTEM && !bo->ttm) {
 641                 BUG_ON(bo->mem.mm_node != NULL);
 642                 bo->mem = *new_mem;
 643                 new_mem->mm_node = NULL;
 644                 return 0;
 645         }
 646
 647         if (new_mem->mem_type == TTM_PL_SYSTEM) {
 648                 if (old_mem->mem_type == TTM_PL_SYSTEM)
 649                         return ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
 650                 if (nouveau_bo_move_flipd(bo, evict, intr, no_wait, new_mem))
 651                         return ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
 652         } else if (old_mem->mem_type == TTM_PL_SYSTEM) {
 653                 if (nouveau_bo_move_flips(bo, evict, intr, no_wait, new_mem))
 654                         return ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
 655         } else {
 656                 if (nouveau_bo_move_m2mf(bo, evict, no_wait, old_mem, new_mem))
 657                         return ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
 658         }
 659
 660         return 0;
 661 }
 662
 663 static int
 664 nouveau_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
 665 {
 666         return 0;
 667 }
 668
 669 struct ttm_bo_driver nouveau_bo_driver = {
 670         .create_ttm_backend_entry = nouveau_bo_create_ttm_backend_entry,
 671         .invalidate_caches = nouveau_bo_invalidate_caches,
 672         .init_mem_type = nouveau_bo_init_mem_type,
 673         .evict_flags = nouveau_bo_evict_flags,
 674         .move = nouveau_bo_move,
 675         .verify_access = nouveau_bo_verify_access,
 676         .sync_obj_signaled = nouveau_fence_signalled,
 677         .sync_obj_wait = nouveau_fence_wait,
 678         .sync_obj_flush = nouveau_fence_flush,
 679         .sync_obj_unref = nouveau_fence_unref,
 680         .sync_obj_ref = nouveau_fence_ref,
 681 };
 682